Bio-based MEG and polyester fiber compositions and methods of making the same
US11352718B2 · kind B2 · utility
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Key dates
| Filing date | Nov 9, 2017 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Nov 9, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are bio-based polyester fibers, particularly a PET fibers, and a method of making the same by: contacting bio-based MEG composition with a diacid composition to form a polyester composition; and spinning and/or drawing the resulting polyester composition into a fiber; wherein the bio-based MEG composition comprises: a) monoethylene glycol (MEG); and b) from about 1 ppm to about 5000 ppm of at least one C3-Cy2 1,2-diol, wherein the C3-Cj2 1, 2-diol is linear, branched, or cyclic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.